CN203501819U - Recycling device for smoke afterheat and dust generated from non-ferrous metal smelting - Google Patents
Recycling device for smoke afterheat and dust generated from non-ferrous metal smelting Download PDFInfo
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- CN203501819U CN203501819U CN201320555165.6U CN201320555165U CN203501819U CN 203501819 U CN203501819 U CN 203501819U CN 201320555165 U CN201320555165 U CN 201320555165U CN 203501819 U CN203501819 U CN 203501819U
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- 239000000428 dust Substances 0.000 title claims abstract description 74
- CWYNVVGOOAEACU-UHFFFAOYSA-N fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 45
- 239000002184 metal Substances 0.000 title claims abstract description 45
- 238000003723 Smelting Methods 0.000 title claims abstract description 42
- 238000004064 recycling Methods 0.000 title claims abstract description 18
- 239000000779 smoke Substances 0.000 title abstract description 7
- 238000011084 recovery Methods 0.000 claims abstract description 89
- 238000001914 filtration Methods 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims abstract description 19
- 239000000919 ceramic Substances 0.000 claims abstract description 14
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 12
- 239000011593 sulfur Substances 0.000 claims abstract description 12
- NINIDFKCEFEMDL-UHFFFAOYSA-N sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 5
- 230000003009 desulfurizing Effects 0.000 claims abstract description 5
- 239000002918 waste heat Substances 0.000 claims description 139
- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 100
- 239000003546 flue gas Substances 0.000 claims description 99
- 239000003517 fume Substances 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 16
- 229910004541 SiN Inorganic materials 0.000 claims description 12
- 238000005516 engineering process Methods 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052802 copper Inorganic materials 0.000 claims description 8
- 239000010949 copper Substances 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 6
- 229920002456 HOTAIR Polymers 0.000 claims description 5
- 239000011133 lead Substances 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 4
- 239000011701 zinc Substances 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 238000001704 evaporation Methods 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 229910052581 Si3N4 Inorganic materials 0.000 abstract description 8
- HQVNEWCFYHHQES-UHFFFAOYSA-N Silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000000746 purification Methods 0.000 abstract description 2
- 239000002912 waste gas Substances 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N al2o3 Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 12
- 238000002844 melting Methods 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 229910001884 aluminium oxide Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000009856 non-ferrous metallurgy Methods 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 241001062472 Stokellia anisodon Species 0.000 description 2
- 229910010293 ceramic material Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 230000002349 favourable Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 230000003078 antioxidant Effects 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002427 irreversible Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 230000002269 spontaneous Effects 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
- Y02P80/15—On-site combined power, heat or cool generation or distribution, e.g. combined heat and power [CHP] supply
Abstract
The utility model relates to a recycling device for smoke afterheat and dust generated from non-ferrous metal smelting and belongs to a method for utilizing the afterheat and treating the waste gas. The recycling device is formed by sequentially connecting a countercurrent heat-exchange heat recovery boiler A (1), a silicon nitride porous ceramic filter (2), a countercurrent heat-exchange heat recovery boiler B (3), a countercurrent heat-exchange heat recovery boiler working-medium heater (4), a sheet type runner gas countercurrent heat exchanger (5), a bag type filter dust remover (6), a fan (7) and a desulfurization workshop (8) through a pipeline or pipe fitting. The recycling device runs according to the following steps: first-stage afterheat recycling, filtering and dust-removing purification for high-temperature smoke, second-stage afterheat recycling, third-stage afterheat recycling, fourth-stage afterheat recycling, low-temperature filtering dust-removing, recycling sulfur, and discharging after the tail gas meets the national emission standard. The recycling device for smoke afterheat and dust generated from non-ferrous metal smelting provided by the utility model has the advantages of high afterheat recycling efficiency, thorough dust recycling, simple technical control and lower recycling cost.
Description
Technical field
The utility model is the recycle device of a kind of smelting non-ferrous metal fume afterheat and dust.The method that belongs to UTILIZATION OF VESIDUAL HEAT IN and exhaust-gas treatment.
Background technology
The a large amount of heat energy of nonferrous metallurgical process consumption, comes spontaneous combustion coal, oil, casing-head gas or electric energy.In nonferrous metallurgical process, the flue gas of discharge is up to more than 1000 ℃, and the heat of taking away accounts for the over half of metal smelt total energy consumption.Wherein temperature accounts for 52% of total fume afterheat higher than the fume afterheat of 1000 ℃, the middle high-temperature residual heat of temperature between 600～1000 ℃ accounts for 26% of total fume afterheat, lower than the low temperature exhaust heats of 600 ℃ account for total fume afterheat 22%. therefore, the waste heat carrying in the flue gas of smelting non-ferrous metal discharge is the valuable energy.Have data statistics, in the residual heat resources of nonferrous metallurgy industry, fume afterheat resource accounts for the more than 80% of available residual heat resources.The recycling of the heat energy that the flue gas of smelting non-ferrous metal discharge carries is the important step of metal smelt industry energy conservation consumption reduction.
In prior art, the recycling of non-ferrous metal metallurgy fume afterheat, mostly adopts waste heat boiler, only high-temperature flue gas waste heat is recycled, and middle-low temperature heat is not also recycled completely, therefore, exists the residual heat resources rate of recovery lower.Still have part of waste heat to enter atmosphere with tail gas.Both wasted energy, again contaminated environment.
The recovery method of dust in non-ferrous metal metallurgy flue gas of the prior art, has dry method to gather dust and wet dust collector.Dry method is gathered dust and is reclaimed dust and use morely, exists process control unstable, burns out cloth bag recover, or the fault that cloth bag stops up happens occasionally, and energy consumption is higher.
A kind of high-temperature residual heat that not only reclaims, and recovery middle-low temperature heat, waste heat recovery efficiency is high, and dust reclaims completely, and low equipment investment, technology controlling and process is easy, cost recovery is lower smelting non-ferrous metal fume afterheat and the recycle device of dust, be that people expect.
Summary of the invention
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and provide a kind of high-temperature residual heat that not only reclaims, and recovery middle-low temperature heat, waste heat recovery efficiency is high, dust reclaims completely, and low equipment investment, technology controlling and process is easy, cost recovery is lower smelting non-ferrous metal fume afterheat and the recycle device of dust.
The purpose of this utility model can reach by following measure:
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, comprise waste-heat recovery device and device for recovering powder, it is characterized in that described waste-heat recovery device and device for recovering powder are by countercurrent flow waste heat boiler A(1), porous SiN ceramic filter (2), countercurrent flow waste heat boiler B(3), countercurrent flow waste heat boiler working medium preheater (4), chip runner back flow of gas heat exchanger (5), bag type filtering deduster (6), air-introduced machine (7), sulfur removal plant (8) be linked in sequence and formed by pipeline or pipe fitting
Described recycle device moves in accordance with the following steps:
1.. waste heat one-level reclaims
Smelting non-ferrous metal flue gas enters countercurrent flow waste heat boiler A(1), with working medium countercurrent flow in boiler, the high temperature heat of being carried passes to boiler working substance; Flue gas self temperature is reduced to≤700 ℃ realize waste heat one-level and reclaim;
2.. filtering high-temperature flue gas udst separation
Through step 1. the flue gas of waste heat one-level after reclaiming enter porous SiN ceramic filter (2), dust removal by filtration purifies;
3.. waste heat secondary recovery
Through step 2. the flue gas of dust removal by filtration after purifying enter countercurrent flow waste heat boiler (3), with boiler working substance countercurrent flow, the thermal energy transfer of being carried is to boiler evaporating working medium; Flue gas self temperature is reduced to≤400 ℃ realize waste heat secondary recovery;
4.. three grades of recovery of waste heat
Through step 3. the flue gas after waste heat secondary recovery enter countercurrent flow waste heat boiler working medium preheater (4), with the working medium countercurrent flow of countercurrent flow waste heat boiler working medium preheater (4), the thermal energy transfer of being carried is to the working medium of boiler working substance preheater; Flue gas self temperature is reduced to≤150 ℃ realize three grades of recovery of waste heat;
5.. level Four waste heat recovery
Through step 4. the flue gas after three grades of recovery of waste heat enter chip runner back flow of gas heat exchanger (5), the thermal energy transfer of being carried is to air at room temperature, the hot-air of generation is for hot-air user use, self temperature is reduced to≤70 ℃;
6.. filter at low temperature dedusting
Through the 5. low-temperature flue gas after air waste heat recovery of step, enter bag type filtering deduster (6), further dust removal by filtration purifies; In flue gas, dust more than 98% is removed;
7.. desulfurization
Through step after 5. the flue gas after dust removal by filtration is sent into sulfur removal plant (8) sulfur recovery and processed, tail gas qualified discharge.
From thermodynamic (al) theory, the most rational heat exchange mode is countercurrent flow, and under same heat transfer boundary condition, countercurrent flow can be realized the uniform temperature difference, and the irreversible loss that heat transfer process is produced is little, therefore changes efficiency high.The technical scheme that the waste heat carrying in the flue gas that inventor of the present utility model adopts countercurrent heat exchange method to discharge for metallic copper melting is recycled, for solving the technical problems to be solved in the utility model, has made outstanding contribution.
Porous ceramics is high temperature resistant, density is low, chemical stability is good, is applicable to high temperature fluid filter.Especially the stable covalent structure of silicon nitride, gives many excellent properties such as its fusing point is high, elevated temperature strength is high, hardness is high, elastic modelling quantity is large, wear-resisting, thermal coefficient of expansion is little, Heat stability is good.Therefore, that porous SiN ceramic has is high temperature resistant, corrosion-resistant, anti-thermal shock, anti-oxidant, wear-resistant etc. good, in the technical solution of the utility model, the porous SiN ceramic filter of selecting, has produced unexpected technique effect to completing task of the present utility model.
The purpose of this utility model can also reach by following measure:
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, is characterized in that the 2. middle porous SiN ceramic filter (2) adopting of step, the silicon nitride foam ceramic material manufacture of selecting silicon nitride, aluminium oxide and yittrium oxide to form.Three's mass percent consists of silicon nitride: aluminium oxide: yittrium oxide=90:2:8.
It is a preferred technical scheme.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, it is characterized in that step 1., 3., the waste-heat recovery device countercurrent flow waste heat boiler A(1 that adopts in 4.), countercurrent flow waste heat boiler B(3) and countercurrent flow waste heat boiler working medium preheater (4) flue gas reclaim the heat exchange employing pair bushing type countercurrent heat exchange methods between working medium with boiler afterheat, or three bushing type countercurrent heat exchange methods; Wherein:
Described two bushing type countercurrent heat exchange methods, heat-exchanger rig is constituted by two different straight tube suit configurations of several diameters, and flue gas is walked central tube, and waste heat recovery working medium is walked annular space pipe, and the two flow direction is contrary, realizes countercurrent flow;
Three described bushing type countercurrent heat exchange methods, heat-exchanger rig consists of three different straight tube suit configurations of diameter, and flue gas is walked central tube and outer annular space, and waste heat recovery working medium is walked interior annular space pipe, and the two flow direction is contrary, realizes countercurrent flow.
It is preferred technical scheme.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, it is characterized in that step 1., 3., 4. in waste-heat recovery device countercurrent flow waste heat boiler A(1), countercurrent flow waste heat boiler B(3) and the heat exchange of reclaiming between working medium of countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler afterheat all adopt two bushing type countercurrent heat exchange methods. heat-exchanger rig is set with to configure by two different straight tubes of several diameters and constitutes, flue gas is walked central tube, waste heat recovery working medium is walked annular space pipe, the two flow direction is contrary, realizes countercurrent flow.
It is a preferred technical scheme.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, it is characterized in that step 1., 3., the waste-heat recovery device countercurrent flow waste heat boiler A(1 that adopts in 4.), countercurrent flow waste heat boiler B(3) and countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler working substance between heat exchange all adopt three bushing type countercurrent heat exchange methods, heat-exchanger rig consists of three different straight tube suit configurations of diameter, flue gas is walked central tube and outer annular space, waste heat recovery working medium is walked interior annular space pipe, the two flow direction is contrary, realizes countercurrent flow.
It is a preferred technical scheme.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, is characterized in that step is 1., 3., adopt waste-heat recovery device countercurrent flow waste heat boiler A(1 in 4.) flue gas all adopts pair bushing type countercurrent heat exchange methods with the heat exchange that boiler afterheat reclaims between working medium; Countercurrent flow waste heat boiler B(3) heat exchange and between countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler working substance adopts three bushing type countercurrent heat exchange methods.
It is most preferred technical scheme.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, it is characterized in that 5. chip runner back flow of gas heat exchanger (5) of step, by organizing runner sheet heat exchange unit, form more, every group of runner sheet heat exchange unit is comprised of the runner sheet A and the runner sheet B that link together by shared heat exchanger plates, the upper end of a side of runner sheet A has runner entrance, and another relative lower end, side has runner exit; The lower end of a side of runner sheet B has runner entrance, and another relative upper end, side has runner exit; Flue gas and air by runner sheet A or runner sheet B, are realized countercurrent flow respectively.
Chip runner back flow of gas heat exchanger heat exchange efficiency is high, flue-gas temperature after heat exchange drops to≤and 70 ℃, the fault of fundamentally having avoided bag type filtering deduster to be burnt ring, makes bag type filtering deduster in dust collecting process, maximize favourable factors and minimize unfavourable ones, continue on in dust collecting process.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, is characterized in that waste heat that the flue gas during smelting of described flue-gas temperature≤1000 ℃ carries and the recoverying and utilizing method of dust, and described step is 3.. waste heat secondary recovery, saving need not.It is preferred technical scheme.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, the working medium that it is characterized in that described waste heat boiler working medium or waste heat boiler working medium preheater is water or low boiling organic working medium.
The application of the recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, the waste heat that the flue gas that it is characterized in that being applicable to discharge in useless composition brass refining production technology carries and the recycling of dust.
The application of the recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, the waste heat that the flue gas that it is characterized in that being applicable to discharge in copper, nickel, lead, zinc smelting technology process units carries and the recycling of dust.
The recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust, can produce following unexpected technique effect compared to existing technology:
1. a kind of high-temperature residual heat that not only reclaims is provided, and recovery middle-low temperature heat, waste heat recovery efficiency is high, and dust reclaims completely, and the lower smelting non-ferrous metal fume afterheat of low equipment investment, cost recovery that technology controlling and process is easy and the recycle device of dust.
2. adopt level Four waste heat recovery, heat recovery rate >=95%. of carrying in flue gas
3. adopt porous SiN ceramic filter, realized the udst separation for high-temperature flue gas, fume recovery rate >=90%, for follow-up heat recovery with dust reclaims and the normal operation of sulfuric acid plant provides assurance.
4. adopt chip runner back flow of gas heat exchanger, flue-gas temperature after heat exchange drops to≤and 70 ℃, the fault of fundamentally having avoided bag type filtering deduster to be burnt ring, makes bag type filtering deduster in dust collecting process, maximize favourable factors and minimize unfavourable ones, continue on in dust collecting process.
Through bag type filtering deduster at≤70 ℃ of temperature after dedusting, the dust dust removal efficiency in flue gas reaches more than 98%, has guaranteed the effectively normal operation of sulfur removal plant sulfur recovery technique.
6. waste heat recovery rate is high, and dust purification is complete, and emission reaches discharge standard.For saving the energy, protection of the environment has been made contribution.
Accompanying drawing explanation
Fig. 1 is the recycle device of smelting non-ferrous metal fume afterheat of the present utility model and dust.Process flow diagram.Wherein:
1.-countercurrent flow waste heat boiler A
2.-porous SiN ceramic filter
3.-countercurrent flow waste heat boiler B
4.-countercurrent flow waste heat boiler working medium preheater
The board-like counterflow air heat exchanger of 5.-
6.-bag type filtering deduster
7.-air-introduced machine
8.-sulfur removal plant
The specific embodiment
The utility model is described in further detail below in conjunction with embodiment:
Embodiment 1
The recoverying and utilizing method of a kind of non-ferrous metal copper melting fume afterheat of the present utility model and dust
Comprise waste-heat recovery device and device for recovering powder, it is characterized in that described waste-heat recovery device and device for recovering powder are by countercurrent flow waste heat boiler A(1), porous SiN ceramic filter (2), countercurrent flow waste heat boiler B(3), countercurrent flow waste heat boiler working medium preheater (4), chip runner back flow of gas heat exchanger (5), bag type filtering deduster (6), air-introduced machine (7) be formed by connecting by pipeline or pipe fitting, after flue gas after waste heat and dust recovery goes sulfuric acid plant (8) desulfurization to process, tail gas qualified discharge;
Described recoverying and utilizing method comprises the steps:
1.. waste heat one-level reclaims
The flue gas of 1400 ℃ from copper refining stove enters countercurrent flow waste heat boiler A(1), with working medium countercurrent flow in boiler, the high temperature heat of being carried passes to boiler working substance; Flue gas self temperature is reduced to≤700 ℃ realize waste heat one-level and reclaim; At countercurrent flow waste heat boiler A(1) in, flue gas adopts two bushing type countercurrent heat exchange methods from the heat exchange that boiler afterheat reclaims between working medium. and heat-exchanger rig is constituted by two different straight tube suit configurations of several diameters, flue gas is walked central tube, waste heat recovery working medium is walked annular space pipe, the two flow direction is contrary, realizes countercurrent flow.
2.. filtering high-temperature flue gas udst separation
Through step 1. the flue gas of waste heat one-level after reclaiming enter porous SiN ceramic filter (2), dust removal by filtration purifies; The porous SiN ceramic filter (2) adopting, the silicon nitride foam ceramic material manufacture of selecting silicon nitride, aluminium oxide and yittrium oxide to form.Three's mass percent consists of silicon nitride: aluminium oxide: yittrium oxide=90:6:4.
3.. waste heat secondary recovery
Through step 2. the flue gas of dust removal by filtration after purifying enter countercurrent flow waste heat boiler (3), with boiler working substance countercurrent flow, the thermal energy transfer of being carried is to boiler evaporating working medium; Flue gas self temperature is reduced to≤400 ℃ realize waste heat secondary recovery; In countercurrent flow waste heat boiler (3), flue gas adopts two bushing type countercurrent heat exchange methods from the heat exchange that boiler afterheat reclaims between working medium. and heat-exchanger rig is constituted by two different straight tube suit configurations of several diameters, flue gas is walked central tube, waste heat recovery working medium is walked annular space pipe, the two flow direction is contrary, realizes countercurrent flow.
4.. three grades of recovery of waste heat
Through step 3. the flue gas after waste heat secondary recovery enter countercurrent flow waste heat boiler working medium preheater (4), with the working medium countercurrent flow of countercurrent flow waste heat boiler working medium preheater (4), the thermal energy transfer of being carried is to the working medium of boiler working substance preheater; Flue gas self temperature is reduced to≤150 ℃ realize three grades of recovery of waste heat; In countercurrent flow waste heat boiler working medium preheater (4), flue gas adopts two bushing type countercurrent heat exchange methods from the heat exchange that boiler afterheat reclaims between working medium. and heat-exchanger rig is constituted by two different straight tube suit configurations of several diameters, flue gas is walked central tube, waste heat recovery working medium is walked annular space pipe, the two flow direction is contrary, realizes countercurrent flow.
5.. level Four waste heat recovery
Through step 4. the flue gas after three grades of recovery of waste heat enter chip runner back flow of gas heat exchanger (5), the thermal energy transfer of being carried is to air at room temperature, the hot-air of generation is for the refining oxidation stage utilization of copper, self temperature is reduced to≤70 ℃; Chip runner back flow of gas heat exchanger (5) forms by organizing runner sheet heat exchange unit more, every group of runner sheet heat exchange unit is comprised of the runner sheet A and the runner sheet B that link together by shared heat exchanger plates, the upper end of a side of runner sheet A has runner entrance, and another relative lower end, side has runner exit; The lower end of a side of runner sheet B has runner entrance, and another relative upper end, side has runner exit; Flue gas and air by runner sheet A or runner sheet B, are realized countercurrent flow respectively.
6.. filter at low temperature dedusting
Through the 5. low-temperature flue gas after air waste heat recovery of step, enter bag type filtering deduster (6), further dust removal by filtration purifies;
7.. desulfurization
Through step after 5. the flue gas after dust removal by filtration is sent into sulfur removal plant (8) sulfur recovery and processed, tail gas qualified discharge.
Heat recovery rate >=95%. of carrying in flue gas, fume recovery rate >=98%.
The recoverying and utilizing method of a kind of non-ferrous metal copper melting fume afterheat of the present utility model and dust
According to the method for embodiment 1 and step, difference is:
1.. 1350 ℃ of flue-gas temperatures
2.. step 1., 3., the waste-heat recovery device countercurrent flow waste heat boiler A(1 that adopts in 4.), countercurrent flow waste heat boiler B(3) and countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler working substance between heat exchange all adopt three bushing type countercurrent heat exchange methods, heat-exchanger rig consists of three different straight tube suit configurations of diameter, flue gas is walked central tube and outer annular space, waste heat recovery working medium is walked interior annular space pipe, the two flow direction is contrary, realizes countercurrent flow.
Heat recovery rate >=97%. of carrying in flue gas, fume recovery rate >=98%.
The recoverying and utilizing method of a kind of non-ferrous metal copper melting fume afterheat of the present utility model and dust
According to the method for embodiment 1 and step, difference is: the heat exchange that countercurrent flow waste heat boiler A(1) flue gas and boiler afterheat reclaim between working medium all adopts two bushing type countercurrent heat exchange methods;
1.. 1400 ℃ of flue-gas temperatures
2.. countercurrent flow waste heat boiler B(3) and countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler working substance between heat exchange adopt three bushing type countercurrent heat exchange methods.
Heat recovery rate >=96%. of carrying in flue gas, fume recovery rate >=98%.
The recoverying and utilizing method of a kind of non-ferrous metal nickel melting fume afterheat of the present utility model and dust
According to the method for claim 1 and step.Difference is: smoke treatment is from the flue gas discharging in non-ferrous metal nickel smelting technology process units, 1380 ℃ of flue-gas temperatures.
Heat recovery rate >=96%. of carrying in flue gas, fume recovery rate >=98%.
The recoverying and utilizing method of a kind of non-ferrous metal lead smelting fume afterheat of the present utility model and dust
According to the method for claim 1 and step, adopt the heat exchange mode of embodiment 2.Difference is: smoke treatment is from the flue gas discharging in non-ferrous metal lead smelting explained hereafter device, 1350 ℃ of flue-gas temperatures.
Heat recovery rate >=97%. of carrying in flue gas, fume recovery rate >=98%.
The recoverying and utilizing method of a kind of non-ferrous zinc melting fume afterheat of the present utility model and dust
According to the method for claim 1 and step, adopt the heat exchange mode of embodiment 3.Difference is: smoke treatment is from the flue gas discharging in non-ferrous zinc smelting technology process units, 1300 ℃ of flue-gas temperatures.
Heat recovery rate >=96%. of carrying in flue gas, fume recovery rate >=98%.
Claims (9)
1. the recycle device of a smelting non-ferrous metal fume afterheat and dust, comprise waste-heat recovery device and device for recovering powder, it is characterized in that described waste-heat recovery device and device for recovering powder are by countercurrent flow waste heat boiler A(1), porous SiN ceramic filter (2), countercurrent flow waste heat boiler B(3), countercurrent flow waste heat boiler working medium preheater (4), chip runner back flow of gas heat exchanger (5), bag type filtering deduster (6), air-introduced machine (7), sulfur removal plant (8) be linked in sequence and formed by pipeline or pipe fitting
Described recycle device moves in accordance with the following steps:
1.. waste heat one-level reclaims
Smelting non-ferrous metal flue gas enters countercurrent flow waste heat boiler A(1), with working medium countercurrent flow in boiler, the high temperature heat of being carried passes to boiler working substance; Flue gas self temperature is reduced to≤700 ℃ realize waste heat one-level and reclaim;
2.. filtering high-temperature flue gas udst separation
Through step 1. the flue gas of waste heat one-level after reclaiming enter porous SiN ceramic filter (2), dust removal by filtration purifies;
3.. waste heat secondary recovery
Through step 2. the flue gas of dust removal by filtration after purifying enter countercurrent flow waste heat boiler (3), with boiler working substance countercurrent flow, the thermal energy transfer of being carried is to boiler evaporating working medium; Flue gas self temperature is reduced to≤400 ℃ realize waste heat secondary recovery;
4.. three grades of recovery of waste heat
Through step 3. the flue gas after waste heat secondary recovery enter countercurrent flow waste heat boiler working medium preheater (4), with the working medium countercurrent flow of countercurrent flow waste heat boiler working medium preheater (4), the thermal energy transfer of being carried is to the working medium of boiler working substance preheater; Flue gas self temperature is reduced to≤150 ℃ realize three grades of recovery of waste heat;
5.. level Four waste heat recovery
Through step 4. the flue gas after three grades of recovery of waste heat enter chip runner back flow of gas heat exchanger (5), the thermal energy transfer of being carried is to air at room temperature, the hot-air of generation is for hot-air user use, self temperature is reduced to≤70 ℃;
6.. filter at low temperature dedusting
Through the 5. low-temperature flue gas after air waste heat recovery of step, enter bag type filtering deduster (6), further dust removal by filtration purifies; In flue gas, dust more than 98% is removed;
7.. desulfurization
Through step after 5. the flue gas after dust removal by filtration is sent into sulfur removal plant (8) sulfur recovery and processed, tail gas qualified discharge.
2. according to the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, it is characterized in that step 1., 3., the waste-heat recovery device countercurrent flow waste heat boiler A(1 that adopts in 4.), countercurrent flow waste heat boiler B(3) and countercurrent flow waste heat boiler working medium preheater (4) flue gas reclaim the heat exchange employing pair bushing type countercurrent heat exchange methods between working medium with boiler afterheat, or three bushing type countercurrent heat exchange methods; Wherein:
Described two bushing type countercurrent heat exchange methods, heat-exchanger rig is constituted by two different straight tube suit configurations of several diameters, and flue gas is walked central tube, and waste heat recovery working medium is walked annular space pipe, and the two flow direction is contrary, realizes countercurrent flow;
Three described bushing type countercurrent heat exchange methods, heat-exchanger rig consists of three different straight tube suit configurations of diameter, and flue gas is walked central tube and outer annular space, and waste heat recovery working medium is walked interior annular space pipe, and the two flow direction is contrary, realizes countercurrent flow.
3. according to the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, it is characterized in that step 1., 3., 4. middle waste-heat recovery device countercurrent flow waste heat boiler A(1), countercurrent flow waste heat boiler B(3) and the heat exchange of reclaiming between working medium of countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler afterheat all adopt two bushing type countercurrent heat exchange methods. heat-exchanger rig is constituted by two different straight tubes suit configurations of several diameters, flue gas is walked central tube, waste heat recovery working medium is walked annular space pipe, the two flow direction is contrary, realize countercurrent flow.
4. according to the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, it is characterized in that step 1., 3., 4. the waste-heat recovery device countercurrent flow waste heat boiler A(1 adopting in), countercurrent flow waste heat boiler B(3) heat exchange and between countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler working substance all adopts three bushing type countercurrent heat exchange methods, heat-exchanger rig consists of three different straight tube suit configurations of diameter, flue gas is walked central tube and outer annular space, waste heat recovery working medium is walked interior annular space pipe, the two flow direction is contrary, realize countercurrent flow.
5. according to the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, it is characterized in that step is 1., 3., adopt waste-heat recovery device countercurrent flow waste heat boiler A(1 in 4.) flue gas all adopts pair bushing type countercurrent heat exchange methods with the heat exchange that boiler afterheat reclaims between working medium; Countercurrent flow waste heat boiler B(3) heat exchange and between countercurrent flow waste heat boiler working medium preheater (4) flue gas and boiler working substance adopts three bushing type countercurrent heat exchange methods.
6. according to the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, it is characterized in that 5. chip runner back flow of gas heat exchanger (5) of step, by organizing runner sheet heat exchange unit, form more, every group of runner sheet heat exchange unit is comprised of the runner sheet A and the runner sheet B that link together by shared heat exchanger plates, the upper end of a side of runner sheet A has runner entrance, and another relative lower end, side has runner exit; The lower end of a side of runner sheet B has runner entrance, and another relative upper end, side has runner exit; Flue gas and air by runner sheet A or runner sheet B, are realized countercurrent flow respectively.
7. according to the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, it is characterized in that waste heat that the flue gas during smelting of described flue-gas temperature≤1000 ℃ carries and the recoverying and utilizing method of dust, described step is 3.. and waste heat secondary recovery, saving need not.
8. according to the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, the working medium that it is characterized in that described waste heat boiler working medium or waste heat boiler working medium preheater is water or low boiling organic working medium.
9. the application of the recycle device of smelting non-ferrous metal fume afterheat claimed in claim 1 and dust, the waste heat that the flue gas that it is characterized in that being applicable to discharge in copper, nickel, lead, zinc smelting technology process units carries and the recycling of dust.
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| CN201320555165.6U CN203501819U (en) | 2013-09-05 | 2013-09-05 | Recycling device for smoke afterheat and dust generated from non-ferrous metal smelting |
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| CN201320555165.6U CN203501819U (en) | 2013-09-05 | 2013-09-05 | Recycling device for smoke afterheat and dust generated from non-ferrous metal smelting |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471404A (en) * | 2013-09-05 | 2013-12-25 | 山东金升有色集团有限公司 | Unit of recovering flue gas waste heat and dust in nonferrous metal smelting |
| CN105803205A (en) * | 2016-03-17 | 2016-07-27 | 安徽省华鑫铅业集团有限公司 | Smelting process for efficient and energy-saving secondary lead |
-
2013
- 2013-09-05 CN CN201320555165.6U patent/CN203501819U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103471404A (en) * | 2013-09-05 | 2013-12-25 | 山东金升有色集团有限公司 | Unit of recovering flue gas waste heat and dust in nonferrous metal smelting |
| CN105803205A (en) * | 2016-03-17 | 2016-07-27 | 安徽省华鑫铅业集团有限公司 | Smelting process for efficient and energy-saving secondary lead |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: EASTERN COPPER COMPANY LTD. Effective date: 20140613 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Jinglian Inventor after: Liu Zhiwei Inventor after: Wang Chunyu Inventor after: Zheng Xianwei Inventor after: Lv Qinghuai Inventor after: Chen Chunguang Inventor after: Lv Ruixin Inventor after: Wang Yinchuan Inventor after: Meng Xianqian Inventor after: Sun Baolin Inventor before: Wang Jinglian Inventor before: Zheng Xianwei Inventor before: Wang Chunyu Inventor before: Lv Qinghuai Inventor before: Chen Chunguang Inventor before: Lv Ruixin Inventor before: Meng Xianqian Inventor before: Sun Baolin |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG JINGLIAN ZHENG XIANWEI WANG CHUNYU LV QINGHUAI CHEN CHUNGUANG LV RUIXIN MENG XIANQIAN SUN BAOLIN TO: WANG JINGLIAN WANG CHUNYU ZHENG XIANWEI LV QINGHUAI CHEN CHUNGUANG LV RUIXIN WANG YINCHUAN MENG XIANQIAN SUN BAOLIN LIU ZHIWEI |
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| TR01 | Transfer of patent right |
Effective date of registration: 20140613 Address after: 276037 Shandong city of Linyi province Lanshan Nanfang town of Qingnian Road No. 2 Patentee after: Shandong Jinsheng Non-Ferrous Group Co., Ltd. Patentee after: Eastern Copper Company Ltd. Address before: 276037 Shandong city of Linyi province Lanshan Nanfang town of Qingnian Road No. 2 Patentee before: Shandong Jinsheng Non-Ferrous Group Co., Ltd. |